Colonel Elmer J. Faust was commissioned a Coast Artillery Corps Officer from Officer Candidate School 20 December 1949. His first duty assignment was as Assistant Gun Platoon Leader, B Battery, 78th Anti-Aircraft Artillery Battalion, Fort Lewis, Washington. | His subsequent duty assignments include: Gun Platoon Leader, B Battery, 78th Anti-Aircraft Artillery Battalion, South Korea; Tactical Officer, Air Defense Artillery Officer Candidate School, Fort Bliss, Texas; Aide-De-Camp, Brigadier General Hobart Hewett Assistant Commandant, Air Defense Artillery and Missile School, Fort Bliss, Texas; B Battery Commander, 4th Air Defense Artillery Battalion, Upper Heyford, England; Assistant Professor of Military Science, McNeese State College, Lake Charles, Louisiana; G-3 Advisor, 7th Infantry Division, Army of Vietnam, My Tho, South Vietnam; Commander, 4th Battalion, 4th Artillery (Nike-Hercules), Fort Lawton, Washington; Chief G-3 Plans, U.S. Army Southern Command, Fort Amador, Panama; Secretary of the General Staff, Headquarters, Fourth U.S. Army, Fort Sam Houston, Texas; J531 Plans Officer, Headquarters, Commander in Chief-Pacific, Fort Smith, Hawaii; and Chief, U.S. Army Section, United States Military Group, Caracas, Venezuela.